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1. 一般现在时

(资料图)

表示一般性，经常性的动作或一般性事实。

含有be动词的句子

He is a teacher.

The girl is very beautiful.

Tim and Jack are students.

★变疑问句将be动词移到句首

Is he a teacher?

Is the girl very beautiful?

Are Tim and Jack students?

★变否定句在be动词后面加not

He is not a teacher.

The girl is not very beautiful.

Tim and Jack are not students.

★肯定回答及否定回答

Yes, he is. No, he is not.

Yes, she is. No, she is not.

Yes, they are. No, they are not.

★不含有be动词的句子，即含有一般动词的句子

第三人称单数及单数名词

He likes books.

She likes him.

The dog likes bones.

★变疑问句在句首加does, 动词变为原型

Does he like books?

Does she like him?

Does the dog like bones?

★变否定句在主语及动词之间加doesn’t, 动词变为原型，原句中的动词不再有第三人称变化。

He doesn’t like books.

She doesn’t like him.

The dog doesn’t like bones.

★肯定回答及否定回答：

Yes, he does. No, he doesn’t.

Yes, she does. No, she doesn’t

Yes, it does. No, it doesn’t.

注意：第三人称单数形式一般在动词后面加S，不要和名词复数混淆，变否定句或疑问句时名词复数没有任何变化。

其他人称及复数名词

I want to have a bath.

We have some meat.

The students like smart teachers.

★变疑问句在句首加do

Do you want to have a bath?

Do we have any meat?

Do the students like smart teachers?

★变否定句在主语和动词之间加don’t.

You don’t want to have a bath.

We don’t have any meat.

The students don’t like smart teachers.

★肯定回答及否定回答

Yes, I do. No, I don’t.

Yes, we do. No, we don’t

Yes, they do. No, they don’t.

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